diff --git a/.circleci/deploy-docs.sh b/.circleci/deploy-docs.sh
index 4c8aa0b44e..b50c03dcb3 100755
--- a/.circleci/deploy-docs.sh
+++ b/.circleci/deploy-docs.sh
@@ -47,6 +47,11 @@ git checkout 3.0
 yarn
 yarn build
 
+# Build the docs for 4.0
+git checkout 4.0
+yarn
+yarn build
+
 # Push the built docs
 cd dist